Constraints on evolution of virus avirulence factors predict the durability of corresponding plant resistances.

ABSTRACT: SUMMARY Understanding the factors driving pathogen emergence and re-emergence is a major challenge, particularly in agriculture, where the use of resistant plant cultivars imposes strong selective pressures on plant pathogen populations and leads frequently to 'resistance breakdown'. Presently, durable resistances are only identified after a long period of large-scale cultivation of resistant cultivars. We propose a new predictor of the durability of plant resistance. Because resistance breakdown involves modifications in the avirulence factors of pathogens, we tested for correlations between the evolutionary constraints acting on avirulence factors or their diversity and the durability of the corresponding resistance genes in the case of plant-virus interactions. An analysis performed on

SUBMITTER: Janzac B 

PROVIDER: S-EPMC6640373 | biostudies-literature | 2009 Sep

REPOSITORIES: biostudies-literature